Wide-particle-size coal gangue air jet flow separator of gangue selecting robot

Abstract

The invention relates to the technical field of coal and gangue separation, in particular to a gangue selecting robot wide-particle-size coal and gangue air jet flow separator which comprises a bottom plate, a first belt conveyor, a second belt conveyor, a conveying motor, a belt driver, a vibration screen assembly, a flow dividing recognition assembly and an air jet flow assembly. The vibrating screen structure is arranged between the two conveying structures, so that part of coal can be screened off, the problem that gangue is shielded is solved, then the remaining coal flow is divided, meanwhile, the upper surface of the gangue is cleaned, the gangue is exposed, and therefore accurate recognition of a recognition probe is facilitated, and the coal and gangue separation accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of coal gangue separation technology, specifically a wide-particle-size coal gangue air jet separator for gangue sorting robots. Background Technology

[0002] Coal resources are an important energy source for human survival, and coal gangue is a solid mixture of coal and gangue. Gangue is a substance with low carbon content and high sulfur content that is associated with coal seams during the coal formation process, making it unsuitable for direct use as fuel. Therefore, it needs to be separated. With the gradual maturation of computer technology and the rapid iteration and upgrading of software and hardware, dry photoelectric coal preparation technology is developing rapidly. Due to its pollution-free and sustainable nature, dry photoelectric coal preparation technology is gradually being applied in some coal preparation plants and coal mines.

[0003] However, existing coal and gangue separation equipment typically uses spray dust suppression near the equipment during the separation process to prevent coal dust. While this method can reduce the spread of coal dust, it also causes some coal to adhere to the surface of wide-particle-size gangue, affecting the imaging effect of the identification probe and thus reducing the accuracy of coal and gangue separation. In addition, when the conveying volume is too large, coal can easily obscure the gangue, causing the identification probe to fail to identify it, thereby reducing the separation effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wide-particle-size coal and gangue air jet separator for gangue sorting. By setting up two conveying structures with a vibrating screen structure between them, a portion of the coal can be screened off first to avoid the problem of gangue being obscured. Then, the remaining coal stream is diverted, and the upper surface of the gangue is cleaned to expose it, thereby facilitating accurate identification by the detection probe and improving the accuracy of coal and gangue separation.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a wide-particle-size coal gangue air jet separator for gangue sorting robot, including a base plate, a belt conveyor 1 fixedly installed on one side of the upper surface of the base plate, a belt conveyor 2 fixedly installed on the other side, a conveyor motor connected to the end of the side wall of the belt conveyor 2, the belt conveyor 1 and the belt conveyor 2 being driven by a belt drive, the belt conveyor 1 and the belt conveyor 2 being connected at their proximal ends by a vibrating screen assembly, a diversion identification assembly being provided above the belt conveyor 2, and an air jet assembly being provided on the upper surface of the base plate and below the end of the belt conveyor 2; The diversion identification component includes a support plate. A support plate is installed above the second belt conveyor. A coal feeding unit is installed on the support plate near the vibrating screen component. The lower end of the coal feeding unit is slidably engaged with the upper end surface of the belt of the second belt conveyor. A coal cleaning unit is installed on the lower end surface of the support plate away from the vibrating screen component. A diversion unit is fixedly installed on the lower end surface of the support plate away from the coal feeding unit. The lower end of the diversion unit is slidably engaged with the upper end surface of the belt of the second belt conveyor. An identification unit is fixedly connected to the upper end surface of the support plate, and the identification unit is located above the diversion unit.

[0006] The beneficial effects of this invention are: 1. By setting up belt conveyor one and belt conveyor two at different heights, a drop is formed in the coal during the conveying process. A vibrating screen assembly is set between the two belt conveyors so that some of the coal can be screened off during the initial conveying process, avoiding the problem of gangue being covered, and making it easier for the upper part of the gangue to be exposed in the coal flow later. 2. In the diversion and identification component, the coal-pulling unit can apply a power source to the coal flow and make it impact the diversion unit. This not only breaks up large pieces of coal, but also shakes off the wet coal attached to the upper surface of the gangue. Combined with the cleaning of the coal cleaning unit, it increases the rate at which the gangue is exposed, thus facilitating accurate identification by the identification probe and improving the accuracy of coal and gangue separation. 3. The set recognition unit can image and recognize the coal flow in real time and transmit the difference between coal and gangue to the air jet component, thereby controlling the air jet component to accurately jet and remove gangue. The degree of automation is high and the coal-gangue separation effect is guaranteed. Attached Figure Description

[0007] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0008] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention; Figure 2 This is a first three-dimensional structural schematic diagram of the present invention; Figure 3 This is the present invention. Figure 1 A three-dimensional structural diagram of the conveyor belt after removing the two front sidewalls; Figure 4 In this invention Figure 3 A magnified structural diagram at point A; Figure 5 In this invention Figure 3 A magnified structural diagram at point B; Figure 6 This is a three-dimensional structural diagram of the flow separation and identification component in this invention; Figure 7 This is a bottom-view three-dimensional structural diagram of the flow diversion identification component in this invention; Figure 8 In this invention Figure 7 A cross-sectional three-dimensional structural diagram; Figure 9 In this invention Figure 8 A magnified structural diagram at point C.

[0009] In the picture: 1. Base plate; 2. Belt conveyor one; 3. Belt conveyor II; 31. Coal retaining side plate; 32. Linkage rubber ring; 33. Protrusion; 4. Conveyor motor; 5. Belt drive; 6. Vibrating screen assembly; 61. Screen plate; 611. Top plate; 62. C-shaped plate; 63. Vibrating spring; 7. Traffic splitting and identification component; 71. Support plate; 72. Coal feeding unit; 721. Vertical shaft; 722. Drive motor; 723. Multi-plate coal feeder; 724. Transmission gear; 725. Cam; 73. Coal cleaning unit; 731. Rectangular chute; 732. Compression spring; 733. Sliding block; 734. Vertical shaft; 735. Cleaning brush; 736. Side plate; 737. Abutment joint; 74. Diverter unit; 741. Vertical rod; 742. Diverter seat; 743. Buffer spring; 744. Diverter cone; 745. Baffle plate; 75. Identification unit; 751. Extension frame; 752. Identification frame; 753. Identification probe; 8. Air jet assembly; 81. Arc plate; 82. High-pressure jet machine; 83. Solenoid valve. Detailed Implementation

[0010] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0011] See Figures 1 to 9 A wide-particle-size coal gangue air jet separator for gangue sorting includes a base plate 1. A belt conveyor 2 is fixedly installed on one side of the upper surface of the base plate 1, and a belt conveyor 3 is fixedly installed on the other side. A conveyor motor 4 is connected to the end of the side wall of the belt conveyor 3. The belt conveyor 2 and the belt conveyor 3 are driven by a belt drive 5. The near ends of the belt conveyor 2 and the belt conveyor 3 are connected by a vibrating screen assembly 6.

[0012] The belt conveyor 2 3 is symmetrically equipped with coal-blocking side plates 31 on its upper end. A linkage rubber ring 32 is fixedly installed on the belt of the belt conveyor 2 3 near the coal-blocking side plate 31. The outer edge of the linkage rubber ring 32 is uniformly provided with protrusions 33 along its circumferential direction.

[0013] The vibrating screen assembly 6 includes a screen plate 61. The screen plate 61 is hinged to the end of the belt conveyor 2 near the belt conveyor 3. Several vibration springs 63 are fixedly installed on the lower end face of the screen plate 61 away from the belt conveyor 2. A U-shaped plate 62 is fixedly installed on the lower end face of the belt conveyor 3 near the belt conveyor 2. The U-shaped plate 62 has an upward opening. The lower ends of the vibration springs 63 are fixedly connected to the U-shaped plate 62. A top plate 611 is fixedly provided on the side wall of the screen plate 61 away from the belt conveyor 2.

[0014] In practice, coal is first added to the upper end of the belt of conveyor 2, and then the conveyor motor 4 is started. The conveyor motor 4 drives conveyor 3 to run. Under the action of belt drive 5, conveyor 2 also runs and drives the coal on its upper end to be conveyed to the left. During the operation of conveyor 3, the linkage rubber ring 32 and the protrusion 33 will rotate synchronously. During the rotation, the protrusion 33 will squeeze the top plate 611. The top plate 611 drives the screen plate 61 to rotate upward around its hinge point. Due to the presence of the vibration spring 63, the screen plate 61 will return to its original position after rotating upward at a certain angle. This process is repeated, so that the screen plate 61 vibrates continuously. The coal on conveyor 2 will fall down onto the screen plate 61 after moving to its left end. After being filtered by the vibration of the screen plate 61, small coal particles will fall below the screen plate 61, while large pieces of coal and gangue on the screen plate 61 will continue to move to the left to conveyor 3 and be conveyed to the left by conveyor 3. Example

[0015] The technical solution is basically the same as that in Embodiment 1, see below. Figures 1 to 3 as well as Figures 6 to 9 The difference is that a diversion identification component 7 is provided above the belt conveyor 2 3, and an air jet component 8 is provided on the upper surface of the base plate 1 and below the end of the belt conveyor 2 3.

[0016] The diversion identification component 7 includes a support plate 71. The support plate 71 is located above the belt conveyor 3. A coal feeding unit 72 is installed on the support plate 71 near the vibrating screen component 6. The lower end of the coal feeding unit 72 is slidably engaged with the upper end surface of the belt of the belt conveyor 3. A coal cleaning unit 73 is located on the lower end surface of the support plate 71 away from the vibrating screen component 6. A diversion unit 74 is fixedly installed on the lower end surface of the support plate 71 away from the coal feeding unit 72. The lower end of the diversion unit 74 is slidably engaged with the upper end surface of the belt of the belt conveyor 3. An identification unit 75 is fixedly connected to the upper end surface of the support plate 71 and is located above the diversion unit 74.

[0017] The coal feeding unit 72 includes a vertical shaft 721. The vertical shafts 721 are symmetrically installed on the support plate 71 near the vibrating screen assembly 6. The upper end of one of the vertical shafts 721 is fixedly connected to a drive motor 722. The drive motor 722 is fixedly installed on the support plate 71 through a motor base. The lower end of the vertical shaft 721 is fixedly connected to a multi-plate coal feeder 723. A transmission gear 724 is fixedly installed on the vertical shaft 721 above the multi-plate coal feeder 723. The two transmission gears 724 mesh with each other. Cams 725 are symmetrically installed on the vertical shaft 721 above the transmission gears 724.

[0018] The coal cleaning unit 73 includes a rectangular chute 731. A rectangular chute 731 is provided in the middle of the lower end face of the support plate 71 and away from the vibrating screen assembly 6. A slider 733 is provided in the rectangular chute 731 through a compression spring 732. A vertical shaft 734 is fixedly connected to the lower end of the slider 733. A cleaning brush 735 is fixedly connected to the lower end of the vertical shaft 734. A side plate 736 is fixedly installed on the vertical shaft 734 at the position corresponding to the cam 725. An abutment 737 is fixedly installed on the side wall of the side plate 736 near the cam 725.

[0019] The diversion unit 74 includes a vertical rod 741, a diversion seat 742, a buffer spring 743, a diversion cone 744, and a partition 745. The vertical rod 741 is symmetrically installed on the lower end face of the support plate 71 at a position away from the coal feeding unit 72. The lower end of the vertical rod 741 is fixedly connected to the diversion seat 742. The diversion cone 744 is slidably installed on the diversion seat 742 near the cleaning brush 735 via the buffer spring 743. The partition 745 is symmetrically arranged on the diversion seat 742 at a position away from the diversion cone 744.

[0020] The identification unit 75 includes an extension frame 751. The extension frame 751 is fixedly connected to the upper end face of the support plate 71. The extension frame 751 extends above the diversion unit 74 and an identification frame 752 is fixedly installed on its lower end face. An identification probe 753 is fixedly installed at the lower end of the identification frame 752.

[0021] The air jet assembly 8 includes an arc plate 81. The arc plate 81 is fixedly installed on the upper surface of the base plate 1 and below the end of the belt conveyor 3. A high-pressure jet machine 82 is symmetrically installed on the upper end of the arc plate 81. An electromagnetic valve 83 is provided on the high-pressure jet machine 82. The electromagnetic valve 83 is connected to the identification probe 753 by means of an electrical signal.

[0022] In actual operation, as large pieces of coal and gangue continue to be conveyed to the left on belt conveyor 23, the drive motor 722 is started. The drive motor 722 drives one of the vertical shafts 721 and the corresponding transmission gear 724 to rotate. Under the meshing action of the other transmission gear 724, both vertical shafts 721 will rotate but in opposite directions. The vertical shafts 721 drive the multi-plate coal pusher 723 to rotate, thereby pushing the large pieces of coal and gangue to the left and impacting the diversion cone 744. After the large pieces of coal impact the diversion cone 744, they will break into smaller pieces of coal. After the gangue impacts the diversion cone 744, the wet coal on the surface of the gangue will fall off, and its surface will be exposed. Then, under the action of the partition 745, two coal streams are formed to the left. During the rotation of the vertical shaft 721, the cam 725 will also rotate. The cam 725 will press against the abutment 737, causing the side plate 736, slider 733, vertical shaft 734 and cleaning brush 735 to move to the left. At this time, the compression spring 732 is compressed. When the cam 725 disengages from the abutment 737, the reaction force of the compression spring 732 will cause the side plate 736, slider 733, vertical shaft 734 and cleaning brush 735 to return to their original positions. This cycle continues. During the process of the multi-plate coal feeder 723 feeding coal, the cleaning brush 735 can brush off the coal adhering to the surface of the gangue, which is beneficial to the exposure of the gangue surface. As the coal jet continues to be transported to the left, the identification probe 753 can continuously acquire imaging information of coal and gangue and judge their differences. Then, the difference is converted into an electrical signal and transmitted to the solenoid valve 83. The solenoid valve 83 can control the opening and closing of the high-pressure jet machine 82, thereby opening the high-pressure jet machine 82 to remove the gangue during the falling process.

[0023] The working principle of this invention during use: First, coal is added to the upper end of the belt of conveyor 2. Then, the conveyor motor 4 is started, which drives conveyor 3. Under the action of belt drive 5, conveyor 2 will also run and carry the coal on its upper end to the left. During the operation of conveyor 3, the linkage rubber ring 32 and the protrusion 33 will rotate synchronously. During the rotation, the protrusion 33 will squeeze the top plate 611. The top plate 611 will drive the screen plate 61 to rotate upward around its hinge point. Due to the presence of the vibration spring 63, the screen plate 61 will return to its original position after rotating upward at a certain angle. This process is repeated, so that the screen plate 61 will vibrate continuously. The coal on conveyor 2 will fall down onto the screen plate 61 after moving to its left end. After being filtered by the vibration of the screen plate 61, small coal particles will fall below the screen plate 61, while large pieces of coal and gangue on the screen plate 61 will continue to move to the left to conveyor 3 and be carried to the left by conveyor 3. 2. During the process of conveying large pieces of coal and gangue to the left on belt conveyor 23, the drive motor 722 is started. The drive motor 722 drives one of the vertical shafts 721 and the corresponding transmission gear 724 to rotate. Under the meshing action of the other transmission gear 724, both vertical shafts 721 will rotate but in opposite directions. The vertical shafts 721 drive the multi-plate coal pusher 723 to rotate, thereby pushing the large pieces of coal and gangue to the left and impacting the diversion cone 744. After the large pieces of coal impact the diversion cone 744, they will break into smaller pieces of coal. After the gangue impacts the diversion cone 744, the wet coal on the surface of the gangue will fall off, and its surface will be exposed. Then, under the action of the partition 745, two coal streams are formed to the left. Third: During the rotation of the vertical shaft 721, the cam 725 will also rotate. The cam 725 will squeeze the abutment 737 to drive the side plate 736, the slider 733, the vertical shaft 734 and the cleaning brush 735 to move to the left. At this time, the compression spring 732 is compressed. When the cam 725 disengages from the abutment 737, the reaction force of the compression spring 732 will drive the side plate 736, the slider 733, the vertical shaft 734 and the cleaning brush 735 to reset. This cycle continues. During the process of the multi-plate coal feeder 723 feeding coal, the cleaning brush 735 can brush off the coal adhering to the surface of the gangue, which is conducive to exposing the surface of the gangue. Fourth: During the process of the coal beam continuing to be transported to the left, the identification probe 753 can continuously acquire imaging information of coal and gangue and judge their differences. Then, the difference is converted into an electrical signal and transmitted to the solenoid valve 83. The solenoid valve 83 can control the opening and closing of the high-pressure jet machine 82, thereby opening the high-pressure jet machine 82 to remove the gangue during the process of gangue falling.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wide-particle-size coal gangue air jet separator for gangue sorting, comprising a base plate, wherein a belt conveyor is fixedly installed on one side of the upper surface of the base plate, and a belt conveyor is fixedly installed on the other side, characterized in that: The belt conveyor 1 and belt conveyor 2 are connected at their near ends by a vibrating screen assembly. A diversion identification assembly is installed above belt conveyor 2, and an air jet assembly is installed on the upper surface of the bottom plate and below the end of belt conveyor 2. The traffic splitting and identification component includes: A support plate is installed above the second belt conveyor; The coal feeding unit is installed on the support plate near the vibrating screen assembly. The lower end of the coal feeding unit slides in contact with the upper end of the belt of the second belt conveyor. The coal cleaning unit is located on the lower end face of the support plate and away from the vibrating screen assembly. The diversion unit is fixedly installed on the lower end face of the support plate and at a position away from the coal feeding unit. The lower end of the diversion unit is in sliding fit with the upper end face of the belt of the second belt conveyor. The identification unit is fixedly connected to the upper surface of the support plate and is located above the diversion unit.

2. The wide-particle-size coal and gangue air jet separator according to claim 1, characterized in that: The belt conveyor is equipped with symmetrical coal-blocking side plates at its upper end.

3. The wide-particle-size coal and gangue air jet separator according to claim 2, characterized in that: A linkage rubber ring is fixedly installed on the belt of the second belt conveyor near the coal retaining side plate, and the outer edge of the linkage rubber ring is uniformly provided with protrusions along its circumferential direction.

4. The wide-particle-size coal and gangue air jet separator according to claim 1, characterized in that: The vibrating screen assembly includes a screen plate. The screen plate is hinged to the end of the first belt conveyor near the second belt conveyor. Several vibrating springs are fixedly installed on the lower end face of the screen plate away from the first belt conveyor. A C-shaped plate is fixedly installed on the lower end face of the second belt conveyor near the first belt conveyor. The opening of the C-shaped plate faces upward, and the lower end of the vibrating spring is fixedly connected to the C-shaped plate.

5. A wide-particle-size coal and gangue air jet separator according to claim 4, characterized in that: A top plate is fixedly installed on the side wall of the sieve plate at a position away from the belt conveyor.

6. The wide-particle-size coal and gangue air jet separator according to claim 1, characterized in that: The coal feeding unit includes vertical shafts. Vertical shafts are symmetrically installed on the support plate near the vibrating screen assembly. A drive motor is fixedly connected to the upper end of one of the vertical shafts. The drive motor is fixedly installed on the support plate via a motor base. A multi-plate coal feeder is fixedly connected to the lower end of the vertical shaft. A transmission gear is fixedly installed on the vertical shaft above the multi-plate coal feeder. Two transmission gears mesh with each other. Cams are symmetrically installed on the vertical shaft above the transmission gears.

7. A high-pressure pulsation-free hydraulic pump based on an electromagnetic speed regulating valve according to claim 1, characterized in that: The coal cleaning unit includes a rectangular chute. A rectangular chute is provided in the middle of the lower end face of the support plate, away from the vibrating screen assembly. A slider is provided in the rectangular chute by a compression spring. A vertical shaft is fixedly connected to the lower end of the slider. A cleaning brush is fixedly connected to the lower end of the vertical shaft. A side plate is fixedly installed on the vertical shaft at the position corresponding to the cam. An abutment is fixedly installed on the side plate near the side wall of the cam.

8. The wide-particle-size coal and gangue air jet separator according to claim 1, characterized in that: The diversion unit includes vertical rods. Vertical rods are symmetrically installed on the lower end face of the support plate and away from the coal feeding unit. A diversion seat is fixedly connected to the lower end of the vertical rod. A diversion cone is slidably installed on the diversion seat near the cleaning brush via a buffer spring. A partition is symmetrically arranged on the diversion seat away from the diversion cone.

9. A wide-particle-size coal and gangue air jet separator according to claim 8, characterized in that: The identification unit includes an extension frame. The upper surface of the support plate is fixedly connected to the extension frame. The extension frame extends to the top of the diversion unit and an identification frame is fixedly installed on its lower surface. An identification probe is fixedly installed at the lower end of the identification frame.

10. A wide-particle-size coal and gangue air jet separator according to claim 9, characterized in that: The air jet assembly includes an arc-shaped plate. An arc-shaped plate is fixedly installed on the upper surface of the base plate and below the two ends of the belt conveyor. High-pressure jet machines are symmetrically installed on the upper surface of the arc-shaped plate. Electromagnetic valves are installed on the high-pressure jet machines. The electromagnetic valves are connected to the identification probes via electrical signals.

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